CN116120836A

CN116120836A - Release agent, preparation method and application thereof and electrochemical aluminum

Info

Publication number: CN116120836A
Application number: CN202211724684.0A
Authority: CN
Inventors: 徐善水; 让永兵; 陈诗阳
Original assignee: Anhui Jiyou New Material Co ltd
Current assignee: Anhui Jiyou New Material Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-16

Abstract

The invention provides a release agent, which is prepared from the following raw materials of montan wax, resin, an emulsifying agent, a defoaming agent and a leveling agent; wherein the resin comprises one or more of organosilicon resin, organosilicon modified acrylic resin, styrene-maleic anhydride copolymer and polyurethane. The release agent has good physical and chemical stability, stable long-time storage performance and no demulsification and delamination after continuous long-time use in the production process; and the rest feed liquid can be used continuously, so that the utilization rate is improved, the production cost is reduced, and the environmental pollution is reduced.

Description

Release agent, preparation method and application thereof and electrochemical aluminum

Technical Field

The invention relates to the technical field of film release coating products, in particular to a release agent, a preparation method and application thereof and electrochemical aluminum.

Background

With the development of the times, the electrochemical aluminum is taken as a decoration product, the grade of a printing product can be effectively improved, the electrochemical aluminum has relatively great development in a plurality of fields, especially in the field of paper package printing, and particularly has relatively common application on the package of tobacco, wine, medicines and daily necessities, and wide acceptance of consumer markets is obtained.

In the process of manufacturing the electrochemical aluminum, a parting agent is a key process and a material, and most of the related technologies use wax emulsion as the parting agent, however, when the wax emulsion is used as the parting agent, demulsification phenomenon can be generated in the process of independent storage and use, so that the concentration of the emulsion is increased after the demulsification phenomenon, the emulsion is further increased, the emulsion is blocked and can not be used, waste is generated, and if the parting agent is not replaced in time, serious quality accidents can be caused; therefore, in order to ensure the product quality, the newly prepared electrochemical aluminum release agent must be replaced after the product is continuously used for 6 to 8 hours, thereby leading to lower material utilization rate, increased production cost and hidden danger of environmental pollution.

Disclosure of Invention

Based on this, it is necessary to provide a parting agent capable of not breaking emulsion, and a preparation method, application and electrochemical aluminum thereof.

The first aspect of the invention provides a release agent, which is prepared from the following raw materials of montan wax, resin, emulsifying agent, defoaming agent and leveling agent;

wherein the resin comprises one or more of organic silicon resin, organic silicon modified acrylic resin, styrene-maleic anhydride copolymer and polyurethane.

In some embodiments, the release agent is prepared from 15 to 30 parts by weight of montan wax, 3 to 7.5 parts by weight of resin, 1 to 10 parts by weight of emulsifier, 0.1 to 2 parts by weight of defoamer and 0.1 to 2 parts by weight of flatting agent.

In some embodiments, the emulsifier comprises a nonionic emulsifier having an HLB value of 15 to 18;

optionally, the emulsifier comprises one or more of a condensate of fatty alcohol and alkylene oxide, p-octyl phenol polyoxyethylene ether, higher fatty alcohol polyoxyethylene ether and fatty acid polyoxyethylene ester.

In some embodiments, the release agent further comprises at least one of the following features:

(1) The defoamer comprises one or more of an organosilicon defoamer and a polyether defoamer;

(2) The leveling agent comprises one or more of modified polysiloxane and polyacrylic acid.

In some embodiments, the release agent further comprises a solvent;

optionally, the solvent comprises water;

optionally, the solvent is 70-80 parts by weight.

The second aspect of the present invention provides a method for preparing a release agent, comprising the steps of:

mixing a part of the solvent with the montan wax and a part of the emulsifier to prepare wax emulsion;

the resin is prepared into resin emulsion with the mass percent concentration of 20-40 percent in advance;

respectively adding the resin emulsion and the rest of the emulsifying agent into the wax emulsion to prepare a mixed solution;

and mixing the rest of the solvent, the defoaming agent, the leveling agent and the mixed liquid to prepare the release agent.

In some embodiments, the step of mixing a portion of the solvent with the montan wax and a portion of the emulsifier to prepare a wax emulsion specifically comprises:

heating 70-80% of solvent to 70-85 ℃, adding the montan wax to dissolve at a stirring speed of 100-200 rpm, then adding 60-80% of emulsifier in batches, heating to 85-95 ℃, and stirring for 1-2 hours at a stirring speed of 400-500 rpm to obtain the wax emulsion.

In some embodiments, the step of adding the resin emulsion and the remaining emulsifying agent to the wax emulsion to obtain a mixed solution comprises the following steps:

and adding the resin emulsion into the wax emulsion in batches at a stirring speed of 200-300 rpm, adding the rest of the emulsifying agent into the wax emulsion in batches, and continuing stirring for 1-2 h to obtain the mixed solution.

In some embodiments, the step of mixing the remaining solvent, the defoamer, the leveling agent and the mixed solution to prepare the release agent specifically includes:

and adding the rest solvent, the defoaming agent and the leveling agent into the cooled mixed solution, continuously stirring at a stirring speed of 100-200 rpm for 10min, and filtering to obtain the release agent.

The invention also provides application of the release agent in preparing the electrochemical aluminum.

The invention also provides an electrochemical aluminum which comprises a release layer prepared by adopting the release agent in the first aspect.

The release agent comprises montan wax, resin, an emulsifying agent, a defoaming agent and a leveling agent, and the preparation raw materials of the release agent comprise the release agent, the preparation method, the application and the electrochemical aluminum; compared with the existing release agent, the release agent has good physical and chemical stability, stable long-time storage performance and no demulsification and delamination after continuous long-time use in the production process; and the rest feed liquid can be used continuously, so that the utilization rate is improved, the production cost is reduced, and the environmental pollution is reduced.

Drawings

FIG. 1 is a graph showing the weight of the remaining solids of the screen as a function of time when the release agent was screen-filtered in each of examples and comparative examples.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the invention, the technical characteristics described in an open mode comprise a closed technical scheme composed of the listed characteristics and also comprise an open technical scheme comprising the listed characteristics.

In the present invention, the numerical ranges are referred to as continuous, and include the minimum and maximum values of the ranges, and each value between the minimum and maximum values, unless otherwise specified. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range description features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to include any and all subranges subsumed therein.

In this context, referring to units of data range, if a unit is only carried after the right endpoint, the units representing the left and right endpoints are identical. For example, 400 to 500 μm means that the units of the left end point "400" and the right end point "500" are μm (micrometers).

Only a few numerical ranges are specifically disclosed herein. However, any lower limit may be combined with any upper limit to form a range not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and any upper limit may be combined with any other upper limit to form a range not explicitly recited. Furthermore, each separately disclosed point or individual value may itself be combined as a lower limit or upper limit with any other point or individual value or with other lower limit or upper limit to form a range not explicitly recited.

The temperature parameter in the present invention is not particularly limited, and may be a constant temperature treatment or a treatment within a predetermined temperature range. The constant temperature process allows the temperature to fluctuate within the accuracy of the instrument control.

In the description of the invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

All embodiments of the invention and alternative embodiments may be combined with each other to form new solutions, unless otherwise specified. All technical features and optional technical features of the invention may be combined with each other to form new technical solutions, unless specified otherwise.

All steps of the present application may be performed sequentially or randomly, preferably sequentially, unless otherwise indicated.

The invention provides a release agent, which is prepared from the following raw materials of montan wax, resin, an emulsifying agent, a defoaming agent and a leveling agent; wherein the resin comprises one or more of organosilicon resin, organosilicon modified acrylic resin, styrene-maleic anhydride copolymer and polyurethane.

When the parting agent is prepared, the montan wax and part of the emulsifier form wax emulsion, the resin forms resin emulsion, and the wax emulsion can be wrapped by the resin emulsion after the wax emulsion and the resin emulsion are mixed; because the resin emulsion has a thickening effect, the resin emulsion can form a shell isolating protective layer between the wax emulsion and water; the wax emulsion wrapped with the shell isolation protective layer cannot be demulsified under the action of shearing force; furthermore, the wax emulsion and the resin emulsion can be stably dispersed in water under the action of the residual emulsifying agent, and even if the shell isolation protective layer still exists after the wax emulsion and the resin emulsion are diluted by water, the wax emulsion and the water can be still separated, so that the wax emulsion has good stability. In addition, since the resin emulsion itself has a self-releasing type, the releasing effect of the releasing agent is not affected.

Compared with the existing release agent, the release agent has good physical and chemical stability, stable long-time storage performance and no demulsification and delamination after continuous long-time use in the production process; waste caused by replacing the release agent in the production process is reduced, frequent replacement of the release agent is not needed in the production process, production time is saved, and production efficiency is improved; and the rest feed liquid can be used continuously, so that the utilization rate is improved, the production cost is reduced, and the environmental pollution is reduced.

In some embodiments, the release agent is prepared from 15 to 30 parts by weight of montan wax, 3 to 7.5 parts by weight of resin, 1 to 10 parts by weight of emulsifier, 0.1 to 2 parts by weight of defoamer and 0.1 to 2 parts by weight of leveling agent.

The use amount of the montan wax is 15-30 parts by weight; for example, 16 to 30 parts, 16 to 29 parts, 17 to 28 parts, 18 to 27 parts, 19 to 26 parts, 20 to 25 parts, 21 to 24 parts, 22 to 23 parts, 15 to 27 parts, or the like may be used, and the specific examples are not limited thereto. The Mongolian wax plays a role in stripping, the Mongolian wax emulsion is formed after the Mongolian wax is emulsified by an emulsifying agent, the Mongolian wax emulsion can be uniformly distributed on the surface of the base film after being coated and dried, and the subsequent coating can be stripped and stripped from the base film after being heated and melted.

Based on 15-30 parts of montan wax, the weight part of the resin is 3-7.5 parts; for example, the amount may be 3.5 to 7.5 parts, 4 to 7 parts, 4.5 to 6.5 parts, 5 to 6 parts, 5.5 to 6 parts, 5 to 5.5 parts, 3 to 6 parts, or the like, and is not particularly limited. After the resin is prepared into the resin emulsion, the resin emulsion can be wrapped, a shell isolation protective layer is formed between the montan wax emulsion and water, and demulsification can not occur when the montan wax emulsion is subjected to the action of shearing force under the action of the shell isolation protective layer; furthermore, the montan wax emulsion and the resin emulsion can be stably dispersed in water under the action of the emulsifier, and after the water is diluted, the shell isolation protective layer still exists, so that the montan wax emulsion and the resin emulsion can be separated, and the montan wax emulsion has good stability.

When preparing the release agent, the resin with the prescribed amount is weighed, and then the resin can be prepared into a resin emulsion by water for the subsequent process. Alternatively, a resin emulsion containing the same dry weight may be used instead of the resin for preparing the mold release.

The weight part of the emulsifier is 1 to 10 parts based on 15 to 30 parts of montan wax; for example, the amount may be 2 to 10 parts, 2 to 9 parts, 3 to 8 parts, 4 to 7 parts, 5 to 6 parts, 1 to 6 parts, or the like, and is not particularly limited. The emulsifier can transform the montan wax from an oil-soluble substance into a water-soluble emulsion.

When the release agent is prepared, the emulsifier is divided into two parts, and one part of the emulsifier is added first and is used for reacting with the montan wax to generate a montan wax emulsion; a part of the emulsifier is added after the montan wax emulsion and the resin emulsion are mixed, so that the montan wax emulsion and the resin emulsion are stably dispersed in water.

Optionally, the emulsifier comprises a nonionic emulsifier having an HLB value of 15 to 18; further alternatively, the emulsifier comprises one or more of a condensate of a fatty alcohol and an alkylene oxide, a p-octylphenol polyoxyethylene ether, a higher fatty alcohol polyoxyethylene ether, and a fatty acid polyoxyethylene ester.

The defoamer is 0.1 to 2 parts by weight based on 15 to 30 parts of montan wax; for example, the amount may be 0.2 to 2 parts, 0.2 to 1.8 parts, 0.4 to 1.6 parts, 0.6 to 1.4 parts, 0.8 to 1.2 parts, 0.8 to 1 parts, or 0.1 to 1.3 parts, etc., and is not particularly limited. The defoamer is used for reducing or inhibiting coating defects caused by bubbles generated by the release agent during the coating process.

Optionally, the defoamer comprises a silicone defoamer or a polyether defoamer.

The weight part of the leveling agent is 0.1 to 2 parts based on 15 to 30 parts of montan wax; for example, the amount may be 0.2 to 2 parts, 0.2 to 1.8 parts, 0.4 to 1.6 parts, 0.6 to 1.4 parts, 0.8 to 1.2 parts, 0.8 to 1 parts, or 0.1 to 1.3 parts, etc., and is not particularly limited. The leveling agent is used for improving or reducing coating surface defects during the application of the release agent.

Optionally, the leveling agent comprises a modified polysiloxane or polyacrylic acid.

In some embodiments, the release agent further comprises a solvent; alternatively, the solvent comprises water.

In some embodiments, the solvent is 70-80 parts by weight; for example, 71 to 80 parts, 71 to 79 parts, 72 to 78 parts, 73 to 77 parts, 74 to 76 parts, 75 to 76 parts, 70 to 76 parts, or the like may be used, and the present invention is not particularly limited. Adopts water as solvent, has no smell, no pollution to environment and low use cost

The invention also provides a preparation method of the release agent, which comprises the following steps: mixing part of solvent with montan wax and part of emulsifier to prepare wax emulsion; pre-preparing resin into resin emulsion with the mass percentage concentration of 20-40%; respectively adding the resin emulsion and the rest of the emulsifying agent into the wax emulsion to prepare a mixed solution; and mixing the rest solvent, the defoaming agent, the leveling agent and the mixed solution to prepare the release agent.

When the release agent is prepared, water can be adopted in advance to prepare resin emulsion with the mass percent concentration of 20-40%, and then the subsequent preparation is carried out; for example, the concentration by mass is not particularly limited, and may be 22 to 40%, 22 to 38%, 24 to 36%, 26 to 34%, 28 to 32%, 30 to 32%, 20 to 30%, or the like. Alternatively, a resin emulsion containing the same dry weight is used instead of the resin for preparing the release agent.

In some embodiments, the step of mixing a portion of the solvent with the montan wax and a portion of the emulsifier to prepare a wax emulsion specifically comprises: heating 70-80% of solvent to 70-85 ℃, adding the Mongolian wax at a stirring speed of 100-200 rpm until the Mongolian wax is dissolved, then adding 60-80% of emulsifier in batches, heating to 85-95 ℃, and stirring for 1-2 hours at a stirring speed of 400-500 rpm to prepare the wax emulsion.

Stirring at a stirring speed of 400-500 rpm after adding the emulsifier, wherein insufficient emulsification can be caused by insufficient shearing force if the stirring speed is lower than 400 rpm; if the stirring speed is higher than 500rpm, a large amount of bubbles will be generated, affecting the wax emulsion quality.

In some embodiments, the step of adding the resin emulsion and the remaining emulsifier to the wax emulsion to prepare a mixed solution comprises: and adding the resin emulsion into the wax emulsion in batches at the stirring speed of 200-300 rpm, adding the rest of the emulsifier into the wax emulsion in batches, and continuously stirring for 1-2 h to obtain the mixed solution.

In some embodiments, the step of mixing the remaining solvent, the defoamer, the leveling agent and the mixed liquid to prepare the release agent specifically comprises: adding the rest solvent, defoamer and flatting agent into the cooled mixed solution, continuously stirring for 10min at the stirring speed of 100-200 rpm, and filtering to obtain the release agent.

The invention also provides application of the parting agent in preparing electrochemical aluminum.

The invention also provides an electrochemical aluminum, which comprises a release layer prepared by adopting the release agent.

When the parting agent is used, the parting agent is diluted to have the solid content of about 0.7-1.2% by water, the diluted parting agent is coated on PET or other films by a coating machine, then a color layer or a laser information layer, an aluminized layer or a dielectric layer and a back adhesive coating are sequentially coated according to an electrochemical aluminum process, and the electrochemical aluminum product is manufactured through slitting and inspection.

The following describes the technical scheme of the present invention in detail with reference to specific examples.

1. Preparation of release agent

Example 1

1. Prescription composition

150g of montan wax, 60g of resin emulsion, 100g of emulsifier, 1g of defoamer, 5g of flatting agent and 800g of water;

the resin emulsion is organic silicon resin emulsion with 30% of solid content, the emulsifier is 35g of fatty acid polyoxyethylene ester and 65g of high-carbon fatty alcohol polyoxyethylene ether, the defoamer is organic silicon defoamer, and the flatting agent is modified polysiloxane.

2. Preparation process

Heating 80% of water to 85 ℃, adding the Mongolian wax at a stirring speed of 200rpm until the Mongolian wax is completely dissolved, slowly dripping 80% of emulsifier, heating to 95 ℃, and stirring for 1h at a stirring speed of 500rpm to obtain wax emulsion;

slowly adding the organic silicon resin emulsion into the wax emulsion at the stirring speed of 300rpm, slowly dripping 20% of the prescription amount of the emulsifier into the wax emulsion, continuously stirring for 1h to ensure that the organic silicon resin emulsion forms a shell isolation protection layer on the surface of the wax emulsion, preparing a mixed solution, and cooling;

adding water with the prescription amount of 20% into the cooled mixed solution, and adjusting the solid content of the mixed solution to 20%;

and adding an antifoaming agent and a leveling agent into the mixed solution with the adjusted solid content, continuously stirring for 10min at a stirring speed of 200rpm, and filtering to obtain the release agent.

Example 2

1. Prescription composition

150g of montan wax, 50g of resin emulsion, 100g of emulsifier, 1g of defoamer, 5g of flatting agent and 800g of water;

the resin emulsion is an organosilicon modified acrylic resin emulsion with the solid content of 20%, the emulsifier is 50g of high-carbon fatty alcohol polyoxyethylene ether and 50g of condensate of fatty alcohol and ethylene oxide, the defoamer is an organosilicon defoamer, and the flatting agent is modified polysiloxane.

2. Preparation process

Heating 70% of water to 70 ℃, adding the Mongolian wax at a stirring speed of 100rpm until the Mongolian wax is completely dissolved, slowly dripping 70% of emulsifier, heating to 85 ℃, and stirring for 2 hours at a stirring speed of 400rpm to obtain wax emulsion;

slowly adding the organosilicon modified acrylic resin emulsion into the wax emulsion at the stirring speed of 200rpm, slowly dripping 30% of the prescription amount of the emulsifier into the wax emulsion, continuously stirring for 2 hours to ensure that the organosilicon modified acrylic resin emulsion forms a shell isolation protection layer on the surface of the wax emulsion, preparing a mixed solution, and cooling;

adding 30% of water into the cooled mixed solution, and adjusting the solid content of the mixed solution to 20%;

and adding an antifoaming agent and a leveling agent into the mixed solution with the adjusted solid content, continuously stirring for 10min at a stirring speed of 100rpm, and filtering to obtain the release agent.

Example 3

1. Prescription composition

wherein the resin emulsion is polyurethane resin emulsion with the solid content of 40%, the emulsifier is p-octyl phenol polyoxyethylene ether 50g and fatty acid polyoxyethylene ester 50g, the defoamer is organic silicon defoamer, and the flatting agent is modified polysiloxane.

2. Preparation process

Heating 80% of water to 80 ℃, adding the Mongolian wax at a stirring speed of 150rpm until the Mongolian wax is completely dissolved, slowly dripping 80% of emulsifier, heating to 90 ℃, and stirring for 1.5 hours at a stirring speed of 450rpm to obtain wax emulsion;

slowly adding the polyurethane resin emulsion into the wax emulsion at the stirring speed of 250rpm, slowly dripping 20% of the formula amount of emulsifier into the wax emulsion, continuously stirring for 1.5h to ensure that the polyurethane resin emulsion forms a shell isolation protection layer on the surface of the wax emulsion, preparing a mixed solution, and cooling;

and adding an antifoaming agent and a leveling agent into the mixed solution with the adjusted solid content, continuously stirring for 10min at a stirring speed of 150rpm, and filtering to obtain the release agent.

Example 4

1. Prescription composition

the resin emulsion is styrene-maleic anhydride copolymer emulsion with 25% of solid content, the emulsifier is 65g of high-carbon fatty alcohol polyoxyethylene ether and 35g of p-octyl phenol polyoxyethylene ether, the defoamer is an organosilicon defoamer, and the flatting agent is modified polysiloxane.

2. Preparation process

Heating 75% of water to 82 ℃, adding the Mongolian wax at a stirring speed of 170rpm until the Mongolian wax is completely dissolved, slowly dripping 80% of emulsifier, heating to 87 ℃, and stirring for 1.7h at a stirring speed of 430rpm to obtain wax emulsion;

slowly adding the styrene-maleic anhydride copolymer emulsion into the wax emulsion at the stirring speed of 230rpm, slowly dripping 20% of the prescribed amount of the emulsifier into the wax emulsion, continuously stirring for 1.7h to ensure that the styrene-maleic anhydride copolymer emulsion forms a shell isolation protective layer on the surface of the wax emulsion, preparing a mixed solution, and cooling;

adding 25% of water into the cooled mixed solution, and adjusting the solid content of the mixed solution to 20%;

and adding an antifoaming agent and a leveling agent into the mixed solution with the adjusted solid content, continuously stirring at a stirring speed of 170rpm for 10min, and filtering to obtain the release agent.

Example 5

1. Prescription composition

300g of montan wax, 75g of resin emulsion, 50g of emulsifier, 20g of defoamer, 20g of flatting agent and 800g of water;

wherein the resin emulsion is styrene-maleic anhydride copolymer emulsion with 25% of solid content, the emulsifier is fatty acid polyoxyethylene ester with 25g and p-octyl phenol polyoxyethylene ether with 25g, the defoamer is polyether defoamer, and the flatting agent is modified polysiloxane.

2. Preparation process

Heating 75% of water to 75 ℃, adding the Mongolian wax at a stirring speed of 130rpm until the Mongolian wax is completely dissolved, slowly dripping 60% of emulsifier to the prescription, heating to 93 ℃, and stirring for 1.3 hours at a stirring speed of 480rpm to prepare wax emulsion;

slowly adding the styrene-maleic anhydride copolymer emulsion into the wax emulsion at the stirring speed of 270rpm, slowly dripping 40% of the prescribed amount of the emulsifier into the wax emulsion, continuously stirring for 1.3h to ensure that the styrene-maleic anhydride copolymer emulsion forms a shell isolation protective layer on the surface of the wax emulsion, preparing a mixed solution, and cooling;

Example 6

1. Prescription composition

200g of montan wax, 30g of resin emulsion, 10g of emulsifier, 10g of defoamer, 1g of flatting agent and 800g of water;

wherein the resin emulsion is polyurethane resin emulsion with 35% of solid content, the emulsifier is condensation product of fatty alcohol and ethylene oxide alkyl and fatty acid polyoxyethylene ester with 5g, the defoaming agent is organic silicon defoaming agent, and the leveling agent is polyacrylic acid.

2. Preparation process

and adding an antifoaming agent and a leveling agent into the mixed solution with the adjusted solid content, continuously stirring for 10min at the stirring speed of 120rpm, and filtering to obtain the release agent.

Comparative example 1

Comparative example 1 and example 1 differ only in that no resin was added to the formulation, all other things being equal.

Comparative example 2

Comparative example 2 used a commercial 5017 water wax.

2. Performance testing

10kg of the release agent prepared in each of the above examples and comparative examples was diluted to a solid content of 10%, and then filtered using a 300 mesh screen, and the weight of the screen residual solids was weighed. The results are shown in Table 1 and FIG. 1.

TABLE 1

Group of	4h(g)	8h(g)	12h(g)	24h(g)	48h(g)	96h(g)	240h(g)	720h(g)	4320h(g)
										Example 1	0	0	0	0	0	0	30	53	117
Example 2	0	0	0	0	0	0	0	0	12
										Example 3	0	0	0	0	0	0	10	19	51
Example 4	0	0	0	0	0	4	6	15	40
										Example 5	0	0	0	0	0	0	27	55	121
Example 6	0	0	0	0	0	0	12	23	55
										Comparative example 1	8	114	340	558	732	910	1000	1000	1000
Comparative example 2	5	110	330	555	728	902	1000	1000	1000

As is clear from the data of examples 1 to 6 and comparative examples 1 to 2 in Table 1, the centrifuge of the present invention has good physical and chemical stability and stable storage property for a long period of time; the reason for the analysis by the technicians is probably mainly due to the fact that the montan wax and part of the emulsifier form wax emulsion, the resin forms resin emulsion, after the wax emulsion and the resin emulsion are mixed, the resin emulsion can wrap the wax emulsion, a shell isolation protection layer is formed between the montan wax emulsion and water, and demulsification can not occur when the montan wax emulsion is subjected to shearing force under the action of the shell isolation protection layer.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The release agent is characterized in that the release agent is prepared from the following raw materials of montan wax, resin, emulsifying agent, defoaming agent and leveling agent;

2. The release agent according to claim 1, wherein the release agent is prepared from 15 to 30 parts by weight of montan wax, 3 to 7.5 parts by weight of resin, 1 to 10 parts by weight of emulsifier, 0.1 to 2 parts by weight of defoamer and 0.1 to 2 parts by weight of leveling agent.

3. The release agent of claim 1, wherein the emulsifier comprises a nonionic emulsifier having an HLB value of 15 to 18;

4. The release agent of claim 1, wherein the release agent further comprises at least one of the following features:

5. The release agent of claim 1, wherein the release agent further comprises a solvent;

optionally, the solvent comprises water;

optionally, the solvent is 70-80 parts by weight.

6. A method of preparing the release agent according to any one of claims 1 to 5, comprising the steps of:

7. The method of preparing a release agent of claim 6, wherein the step of mixing a portion of the solvent with the montan wax and a portion of the emulsifier to prepare a wax emulsion comprises:

8. The method of preparing a mold release agent according to claim 6, wherein the step of adding the resin emulsion and the remaining emulsifier to the wax emulsion, respectively, to prepare a mixed solution, comprises:

adding the resin emulsion into the wax emulsion in batches at a stirring speed of 200-300 rpm, adding the rest of the emulsifying agent into the wax emulsion in batches, and continuously stirring for 1-2 h to obtain the mixed solution;

the step of mixing the rest of the solvent, the defoaming agent, the leveling agent and the mixed liquid to prepare the release agent specifically comprises the following steps:

9. Use of a release agent according to any one of claims 1 to 5 for the preparation of galvanic aluminium.

10. An electrochemical aluminium comprising a release layer prepared using a release agent according to any one of claims 1 to 5.